diff --git a/source/quickerNES/core/core.hpp b/source/quickerNES/core/core.hpp
index bbebdff..0bb09c2 100644
--- a/source/quickerNES/core/core.hpp
+++ b/source/quickerNES/core/core.hpp
@@ -232,6 +232,12 @@ class Core : private Cpu
     *outputDataPos += 4; *referenceDataPos += 4;
   }
 
+  static inline void deserializeBlockHead(size_t* inputDataPos, size_t* referenceDataPos)
+  {
+    *inputDataPos += 4; *referenceDataPos += 4;
+    *inputDataPos += 4; *referenceDataPos += 4;
+  }
+
   static inline void serializeDifferentialData(
     const uint8_t* __restrict__ inputData,
     const size_t inputDataSize,
@@ -362,8 +368,8 @@ class Core : private Cpu
 
       if (HEADBlockEnabled == true) serializeBlockHead(outputData, &outputDataPos, &referenceDataPos, "TIME", inputDataSize);
 
-      if (outputData != nullptr) memcpy(&outputData[outputDataPos], inputData, inputDataSize);
-      outputDataPos += inputDataSize; referenceDataPos += inputDataSize;
+      serializeContiguousData(inputData, inputDataSize, outputData, &outputDataPos);
+      if (useDifferentialCompression == true) referenceDataPos += inputDataSize;
     }
 
     // CPUR Block
@@ -383,8 +389,8 @@ class Core : private Cpu
 
       if (HEADBlockEnabled == true) serializeBlockHead(outputData, &outputDataPos, &referenceDataPos, "CPUR", inputDataSize);
 
-      if (outputData != nullptr) memcpy(&outputData[outputDataPos], inputData, inputDataSize);
-      outputDataPos += inputDataSize; referenceDataPos += inputDataSize;
+      serializeContiguousData(inputData, inputDataSize, outputData, &outputDataPos);
+      if (useDifferentialCompression == true) referenceDataPos += inputDataSize;
     }
 
     if (PPURBlockEnabled == true)
@@ -394,8 +400,8 @@ class Core : private Cpu
 
       if (HEADBlockEnabled == true) serializeBlockHead(outputData, &outputDataPos, &referenceDataPos, "PPUR", inputDataSize);
 
-      if (outputData != nullptr) memcpy(&outputData[outputDataPos], inputData, inputDataSize);
-      outputDataPos += inputDataSize; referenceDataPos += inputDataSize;
+      serializeContiguousData(inputData, inputDataSize, outputData, &outputDataPos);
+      if (useDifferentialCompression == true) referenceDataPos += inputDataSize;
     }
 
     // APUR Block
@@ -409,8 +415,8 @@ class Core : private Cpu
 
       if (HEADBlockEnabled == true) serializeBlockHead(outputData, &outputDataPos, &referenceDataPos, "APUR", inputDataSize);
 
-      if (outputData != nullptr) memcpy(&outputData[outputDataPos], inputData, inputDataSize);
-      outputDataPos += inputDataSize; referenceDataPos += inputDataSize;
+      serializeContiguousData(inputData, inputDataSize, outputData, &outputDataPos);
+      if (useDifferentialCompression == true) referenceDataPos += inputDataSize;
     }
 
     // CTRL Block
@@ -421,8 +427,8 @@ class Core : private Cpu
 
       if (HEADBlockEnabled == true) serializeBlockHead(outputData, &outputDataPos, &referenceDataPos, "CTRL", inputDataSize);
 
-      if (outputData != nullptr) memcpy(&outputData[outputDataPos], inputData, inputDataSize);
-      outputDataPos += inputDataSize; referenceDataPos += inputDataSize;
+      serializeContiguousData(inputData, inputDataSize, outputData, &outputDataPos);
+      if (useDifferentialCompression == true) referenceDataPos += inputDataSize;
     }
 
     // MAPR Block
@@ -433,8 +439,8 @@ class Core : private Cpu
 
       if (HEADBlockEnabled == true) serializeBlockHead(outputData, &outputDataPos, &referenceDataPos, "MAPR", inputDataSize);
 
-      if (outputData != nullptr) memcpy(&outputData[outputDataPos], inputData, inputDataSize);
-      outputDataPos += inputDataSize; referenceDataPos += inputDataSize;
+      serializeContiguousData(inputData, inputDataSize, outputData, &outputDataPos);
+      if (useDifferentialCompression == true) referenceDataPos += inputDataSize;
     }
 
     // LRAM Block
diff --git a/tests/arkanoid.warpless.test b/tests/arkanoid.warpless.test
index ad14a9a..46ad719 100644
--- a/tests/arkanoid.warpless.test
+++ b/tests/arkanoid.warpless.test
@@ -5,5 +5,11 @@
   "Sequence File": "arkanoid.warpless.sol", 
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "NTAB", "SPRT", "MAPR", "CTRL", "APUR" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/arkanoid.warps.test b/tests/arkanoid.warps.test
index a8c3976..98f9ab8 100644
--- a/tests/arkanoid.warps.test
+++ b/tests/arkanoid.warps.test
@@ -5,5 +5,11 @@
   "Sequence File": "arkanoid.warps.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "NTAB", "SPRT", "MAPR", "CTRL", "APUR" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/castlevania1.anyPercent.test b/tests/castlevania1.anyPercent.test
index 0e0e807..2fcc901 100644
--- a/tests/castlevania1.anyPercent.test
+++ b/tests/castlevania1.anyPercent.test
@@ -5,5 +5,11 @@
   "Sequence File": "castlevania1.anyPercent.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "NTAB", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/castlevania1.pacifist.test b/tests/castlevania1.pacifist.test
index 44b26b6..568bc3c 100644
--- a/tests/castlevania1.pacifist.test
+++ b/tests/castlevania1.pacifist.test
@@ -5,5 +5,11 @@
   "Sequence File": "castlevania1.pacifist.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "NTAB", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/galaga.anyPercent.test b/tests/galaga.anyPercent.test
index 1f0c951..5f0aefb 100644
--- a/tests/galaga.anyPercent.test
+++ b/tests/galaga.anyPercent.test
@@ -5,5 +5,11 @@
   "Sequence File": "galaga.anyPercent.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "NTAB", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/metroid.playaround.test b/tests/metroid.playaround.test
index c1ac133..b4d53a9 100644
--- a/tests/metroid.playaround.test
+++ b/tests/metroid.playaround.test
@@ -5,5 +5,11 @@
   "Sequence File": "metroid.playaround.sol",
   "Disable State Blocks": [ "HEAD", "CHRR", "NTAB", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/nigelMansell.anyPercent.test b/tests/nigelMansell.anyPercent.test
index 3e5a787..e085cf5 100644
--- a/tests/nigelMansell.anyPercent.test
+++ b/tests/nigelMansell.anyPercent.test
@@ -5,5 +5,11 @@
   "Sequence File": "nigelMansell.anyPercent.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/ninjaGaiden.anyPercent.test b/tests/ninjaGaiden.anyPercent.test
index b39ab9b..6a10196 100644
--- a/tests/ninjaGaiden.anyPercent.test
+++ b/tests/ninjaGaiden.anyPercent.test
@@ -5,5 +5,11 @@
   "Sequence File": "ninjaGaiden.anyPercent.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "NTAB", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/ninjaGaiden.pacifist.test b/tests/ninjaGaiden.pacifist.test
index 16c41d6..a5be4ee 100644
--- a/tests/ninjaGaiden.pacifist.test
+++ b/tests/ninjaGaiden.pacifist.test
@@ -5,5 +5,11 @@
   "Sequence File": "ninjaGaiden.pacifist.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "NTAB", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/ninjaGaiden2.anyPercent.test b/tests/ninjaGaiden2.anyPercent.test
index cffced6..722a8a4 100644
--- a/tests/ninjaGaiden2.anyPercent.test
+++ b/tests/ninjaGaiden2.anyPercent.test
@@ -5,5 +5,11 @@
   "Sequence File": "ninjaGaiden2.anyPercent.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "NTAB", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/ninjaGaiden2.pacifist.test b/tests/ninjaGaiden2.pacifist.test
index 399674d..5d4e5f3 100644
--- a/tests/ninjaGaiden2.pacifist.test
+++ b/tests/ninjaGaiden2.pacifist.test
@@ -5,5 +5,11 @@
   "Sequence File": "ninjaGaiden2.pacifist.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "NTAB", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/novaTheSquirrel.anyPercent.test b/tests/novaTheSquirrel.anyPercent.test
index b868602..6ade17f 100644
--- a/tests/novaTheSquirrel.anyPercent.test
+++ b/tests/novaTheSquirrel.anyPercent.test
@@ -5,5 +5,11 @@
   "Sequence File": "novaTheSquirrel.anyPercent.sol",
   "Disable State Blocks": [ "HEAD", "CHRR", "NTAB", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/princeOfPersia.anyPercent.test b/tests/princeOfPersia.anyPercent.test
index 31cf3ee..a4ad4f2 100644
--- a/tests/princeOfPersia.anyPercent.test
+++ b/tests/princeOfPersia.anyPercent.test
@@ -5,5 +5,11 @@
   "Sequence File": "princeOfPersia.anyPercent.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "NTAB", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/rcProAmII.race1.test b/tests/rcProAmII.race1.test
index 8416256..5ef8511 100644
--- a/tests/rcProAmII.race1.test
+++ b/tests/rcProAmII.race1.test
@@ -5,5 +5,11 @@
   "Sequence File": "rcProAmII.race1.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "NTAB", "SPRT", "CTRL", "APUR" ],
   "Controller 1 Type": "FourScore1",
-  "Controller 2 Type": "FourScore2"
+  "Controller 2 Type": "FourScore2",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/saintSeiyaKanketsuHen.anyPercent.test b/tests/saintSeiyaKanketsuHen.anyPercent.test
index 595c6bc..59c7273 100644
--- a/tests/saintSeiyaKanketsuHen.anyPercent.test
+++ b/tests/saintSeiyaKanketsuHen.anyPercent.test
@@ -5,5 +5,11 @@
   "Sequence File": "saintSeiyaKanketsuHen.anyPercent.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/saintSeiyaOugonDensetsu.anyPercent.test b/tests/saintSeiyaOugonDensetsu.anyPercent.test
index 88e4213..cd456cc 100644
--- a/tests/saintSeiyaOugonDensetsu.anyPercent.test
+++ b/tests/saintSeiyaOugonDensetsu.anyPercent.test
@@ -5,5 +5,11 @@
   "Sequence File": "saintSeiyaKanketsuHen.anyPercent.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "NTAB", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/saiyuukiWorld.anyPercent.test b/tests/saiyuukiWorld.anyPercent.test
index 5f5eb28..4a4251a 100644
--- a/tests/saiyuukiWorld.anyPercent.test
+++ b/tests/saiyuukiWorld.anyPercent.test
@@ -5,5 +5,11 @@
   "Sequence File": "saiyuukiWorld.anyPercent.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "NTAB", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/saiyuukiWorld.lastHalf.test b/tests/saiyuukiWorld.lastHalf.test
index 011ee44..c97f303 100644
--- a/tests/saiyuukiWorld.lastHalf.test
+++ b/tests/saiyuukiWorld.lastHalf.test
@@ -3,7 +3,13 @@
   "Expected ROM SHA1": "C2F12D915A4D0B1FFDF8A64AE1092CE6A2D08770",
   "Initial State File": "saiyuukiWorld.lastHalf.state",
   "Sequence File": "saiyuukiWorld.lastHalf.sol",
-  "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "NTAB", "SPRT", "CTRL" ],
+  "Disable State Blocks": [ ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/solarJetman.anyPercent.test b/tests/solarJetman.anyPercent.test
index e0f5bb0..000e5fa 100644
--- a/tests/solarJetman.anyPercent.test
+++ b/tests/solarJetman.anyPercent.test
@@ -7,5 +7,11 @@
   "Sequence File": "solarJetman.anyPercent.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "NTAB", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/sprilo.anyPercent.test b/tests/sprilo.anyPercent.test
index 3b18368..d838a45 100644
--- a/tests/sprilo.anyPercent.test
+++ b/tests/sprilo.anyPercent.test
@@ -5,5 +5,11 @@
   "Sequence File": "sprilo.anyPercent.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "NTAB", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/superMarioBros.warpless.test b/tests/superMarioBros.warpless.test
index 997a00a..cbaebf9 100644
--- a/tests/superMarioBros.warpless.test
+++ b/tests/superMarioBros.warpless.test
@@ -5,5 +5,11 @@
   "Sequence File": "superMarioBros.warpless.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "NTAB", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/superMarioBros.warps.test b/tests/superMarioBros.warps.test
index 0cb5954..7696ce6 100644
--- a/tests/superMarioBros.warps.test
+++ b/tests/superMarioBros.warps.test
@@ -5,5 +5,11 @@
   "Sequence File": "superMarioBros.warps.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "NTAB", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/superMarioBros3.warps.test b/tests/superMarioBros3.warps.test
index f419626..bbf865c 100644
--- a/tests/superMarioBros3.warps.test
+++ b/tests/superMarioBros3.warps.test
@@ -5,5 +5,11 @@
   "Sequence File": "superMarioBros3.warps.sol",
   "Disable State Blocks": [ "HEAD", "CHRR", "NTAB", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/superOffroad.anyPercent.test b/tests/superOffroad.anyPercent.test
index baa8d4d..3da3976 100644
--- a/tests/superOffroad.anyPercent.test
+++ b/tests/superOffroad.anyPercent.test
@@ -5,5 +5,11 @@
   "Sequence File": "superOffroad.anyPercent.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }
diff --git a/tests/tennis.anyPercent.test b/tests/tennis.anyPercent.test
index 141c996..f590571 100644
--- a/tests/tennis.anyPercent.test
+++ b/tests/tennis.anyPercent.test
@@ -5,5 +5,11 @@
   "Sequence File": "tennis.anyPercent.sol",
   "Disable State Blocks": [ "HEAD", "SRAM", "CHRR", "NTAB", "SPRT", "CTRL" ],
   "Controller 1 Type": "Joypad",
-  "Controller 2 Type": "None"
+  "Controller 2 Type": "None",
+  "Differential Compression":
+  {
+    "Enabled": false,
+    "Max Differences": 2200,
+    "Use Zlib": true
+  }
 }